Thanks to Franco Sotgiu and his friends, I was able to visit wonderful sites to research! Woods of Quercus suber and Quercus ilex.. Exciting!
Many species found, expecially of the Genus Russula.
This is the Russula amarissima, uncommon species found under Quercus suber and Quercus ilex in Bolotana (NU); Russula amarissima is typical for the very bitter taste and for the strong yellowing compared to similar Russula lepida.
Great place, great people. Thanks guys.